Changes:
* Fix OpenBSD cpu.sh output to match others
* Fix OpenBSD df.sh output (no need for %% here)
* Do not use sudo or doas when running as root
* Use #!/usr/bin/env bash to support OpenBSD in run_nix_ta_commands
* Fix rsyslog example to trim whitespace in run_nix_ta_commands
* Add /usr/local/sbin:/usr/local/bin to PATH in run_nix_ta_commands
* Fix getting hour and minute for OpenBSD in run_nix_ta_commands
"08" shows up to printf as octal
* Support difference in OpenBSD logger command:
Requires modifying /etc/syslog.conf and setting facility in /etc/nix_ta.conf
Filter out multiple listing of the same btrfs volume
Use mktemp for temp files (for times when the TA may be run outside of Splunk)
If running rlog.sh outside of Splunk, use $HOME to store seek file
Debian also uses apt
Arch Linux uses pacman
Add use of sudo -n for 'apt update' and 'pacman -Syy'
vmstat uses "K paged out"
Replace the use of 'sar' with netstat and vm_stat for MacOS
